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<a href="#typedef-members">Typedefs</a>  </div>
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<div class="title">Global array typedefs<div class="ingroups"><a class="el" href="group__DenseMatrixManipulation__chapter.html">Dense matrix and array manipulation</a> &raquo; <a class="el" href="group__DenseMatrixManipulation__Reference.html">Reference</a> &raquo; <a class="el" href="group__Core__Module.html">Core module</a></div></div>  </div>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>Eigen defines several typedef shortcuts for most common 1D and 2D array types.</p>
<p>The general patterns are the following:</p>
<p><code>ArrayRowsColsType</code> where <code>Rows</code> and <code>Cols</code> can be <code>2</code>,<code>3</code>,<code>4</code> for fixed size square matrices or <code>X</code> for dynamic size, and where <code>Type</code> can be <code>i</code> for integer, <code>f</code> for float, <code>d</code> for double, <code>cf</code> for complex float, <code>cd</code> for complex double.</p>
<p>For example, <code>Array33d</code> is a fixed-size 3x3 array type of doubles, and <code>ArrayXXf</code> is a dynamic-size matrix of floats.</p>
<p>There are also <code>ArraySizeType</code> which are self-explanatory. For example, <code>Array4cf</code> is a fixed-size 1D array of 4 complex floats.</p>
<p>With <span class="cpp11">[c++11]</span>, template alias are also defined for common sizes. They follow the same pattern as above except that the scalar type suffix is replaced by a template parameter, i.e.:</p><ul>
<li><code>ArrayRowsCols&lt;Type&gt;</code> where <code>Rows</code> and <code>Cols</code> can be <code>2</code>,<code>3</code>,<code>4</code>, or <code>X</code> for fixed or dynamic size.</li>
<li><code>ArraySize&lt;Type&gt;</code> where <code>Size</code> can be <code>2</code>,<code>3</code>,<code>4</code> or <code>X</code> for fixed or dynamic size 1D arrays.</li>
</ul>
<dl class="section see"><dt>See also</dt><dd>class <a class="el" href="classEigen_1_1Array.html" title="General-purpose arrays with easy API for coefficient-wise operations.">Array</a> </dd></dl>
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Typedefs</h2></td></tr>
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